Depuis un moment, lorsque mes batteries sont faibles et que je lance mon groupe électrogène , le victron ne se met pas en mode charge , plusieurs fois on entend le bruit du relay qui s’enclenche pendant une seconde et qui se déclenche la seconde d’après . Il peut par moment au bout de quelques minutes se mettre en mode “charge” mais cela ne dure pas plus de 10 secondes.
Le groupe électrogène à 5 ans on vient de changer les balais du moteur et le régulateur de tension.
Ps : Lorsque je place le Victron en mode “ charge only” avec le groupe électrogène fonctionnant, il se met de suite en charge batterie mais seulement pour quelques minutes et puis s’arrête .
Quelqu’un de la communauté à t’il déjà eu se problème ? Merci pour votre aide.
If you connect to the multiplus with Mk3 and VE configure on a laptop, then you may find under the grid tab an “IP protection log”. This will usually give the reason for the generator disconnection.
There are many reasons why a generator will not connect with the inverter in “invert” mode, this may be due to a sudden voltage drop, low frequency or high harmonic content (non sinusoidal voltage). Some of these problems are difficult to detect. Switching to charger only eases the restriction on the input power quality somewhat.
It may also help to add a resistive load of a few 100 W to the generator to see if the waveform improves.
Also with an older generator, an insulation test should be conducted - to see if the main power winding is still sufficiently isolated from the generator ground.
Thank you so much for your reply. Unfortunately, I don’t yet have the MK3 to access the Victron settings.
I also thought, like you, that the problem might be related to the sinusoidal, irregular, etc., quality of the voltage.
I read in the Victron manual that there’s a setting that can be changed to compensate for the poor quality of the voltage coming from the generator. Could you confirm that?
What exactly do you mean by: “Also with an older generator, an insulation test should be conducted - to see if the main power winding is still sufficiently isolated from the generator ground*.”*
yes, but you need the Mk3 to access these settings.
Sometimes the winding insulation breaks down, due to thermal cycling, and this arcs over during operation - but cannot be detected by standard resistance test. This type of fault needs an insulation tester, which typically puts 500Vdc from the winding to ground.